Improvement in steam-boilees



RICHARD NEEDHAM, OF DUKINFIELD, ENGIiA-ND..

Letters Patent .Na 67,340, dated July 30, 1867; patented in England.December 26, 1861.

IMPROVEMENT IN STEAM-BOILERS.

dige Stimuli tifcrnh to iu tips lttttts ntmt mit mating part of tigtsmut.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, RICHARD NEEDHAM, of Dukineld, in the county ofChester, and Kingdom of England, engineer, have invented new and usefulImprovements in Apparatus for Cleansing Steam-Boilersg and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings and 'to the letters ofreference marked thereon.

This invention consists in an improved mode of removing the scum fromsteam-boilers. In the interior of the boiler I place a pipe extendinglongitudinally from end to end, and connected at one endA to o. verticalpipe,

Vcommunicating with a cock or valve on the outside. The saidlongitudinalpipe is placed at the bottom of the interior of the boiler, or at somedistance above it, as may be convenient, and has connected to its top anumber of vertical pipes, each opening in thcshape of a funnel at thelevel of the water. The said funnels face the frontor firing end of theboiler, so that the scumshall of necessity enter them in consequence ofthe heat at the front end of the boiler causing the 'low or roll ofwater towards the back. The scum after entering the funnels passesthrough the vertical and longitudinal pipes to the cock or valve on theoutside, which is opened, when required, to'let od" the scum. Thisarrangement may be modified by placing in the funnels a series ofcompartments, so that theuppcr edges of the sides of the compartmentsascend in steps one above the other, these compartments communicatinglwith one common box orpreceiver which has its bottom inclined from theends towards the middle, such incline being varied to suit the differentdescriptions of boilers. The lowest compartment is placed at about thelevel of the lowest water line, and the highest compartment about on alevel with the high-water level of the boiler. Any convenient number ofcompartments, stepped one above the other, may he used. The lowest edgesof the partitions forming the compartments descend a little below theupper edge of the lowest compartment,`and at this level a perforatedplate may be fixed which will tend to prevent agitation, and thus thedisturbance of the scum or sediment which may have been deposited willbe prevented from lreturning to the water in the boiler.

` My invention A/ivill be clearly understood by referring to the figuresand letters onthe accompanying sheet of drawings, in which- Figureslvand 2 are longitudinal transverse sections of an ordinary two-finedboiler provided \vith.my improved apparatus for removing the scrum from`the water, and Figures 3 and 4 are plans of the two different funnels.In gs. l and 2 the longitudinal pipe extending from end to end in theinterior of the boiler is shown ati1.

4 It is closed at one end,` as at Z7, and at the other end connected tothe elbow pipe c, which is outside the boiler,

and to which is bolted the cock or valve d. At the top of thelongitudinal pipe there are vertical pipes ef, which open either intoflattened funnels g, figs. 1, 2, and 4, or into funnels L, figs. 1, 2,and 3, having a series of compartments. The funnel g is simply a cavity,and the funnel 7L another cavity, having` a number of sides orpartitions, z', a perforated bottom, k, and'a chamber, Z, and both thefunnels are placed so as to face the front or tiring end of the boiler'.The ordinary level of the .water is represented by the dotted line, andthe heat from thg firing end causes a continual agitation or'ow of Watertowards the backQhy which means the scum enters the funnels and pipes,from whence it is blown out or removed by opening the cock or valve d.

I do not claim-dividing the funnel-shaped skimmer into compartmentspas Iam aware that that feature is claimed in the patent of James Seward and`Henry Smith, of February 5, 1857.

I claim as my invention the combination with a steam-boiler of one ormore funnels or open-mouthed skimmers, so Vconstructed and arranged andprovided with au exit pipe as' to collect the scum from the surface ofthe water, substantially as hereinabove set forth.

Done at Manchester, England, this seventeenth day of May, 1865.

RICHARD NEDHAM.

Witn esscs:

EDWARD JOSEPH HUGHES, Patent Agent, 20 Cross Street, M'anclteter, G.SEPTIMUS HUGHES, Patent Agent, 20 'Cross Street, Manchester.

